Blood Pressure Measurements with Different Currently Available Methods in Elderly Hypertensive Hospitalized Patients: A Real World Cross-Sectional Study

Figure 3

Scatter (a) and Bland & Altman (b) plots comparing diastolic blood pressure measured with the proposed strategies (by physicians, nurses, and patients and with a finger beat-to-beat monitor) and daytime diastolic 24hBPM. Dashed red lines indicate the high daytime diastolic pressure cut-off for 24hBPM; dashed blue lines indicate the high diastolic pressure cut-off for the different measurement strategies (physicians: a and b1; nurses: a and b2; patients: a and b3; finger beat-to-beat: a and b4). Solid black lines indicate the linear correlation between diastolic blood pressure measured with the different methods and daytime 24hBPM (the r² coefficient is superimposed on the graph). Red lines on the Bland-Altman plot indicate the bias; dotted green lines indicate the limits of agreement.

(a)

(b)